Bromine 35

Atomic No. Order:

Alphabetic Order:

Periodic Table

2, 8, 18,

F
9

Cl
17

Br
35

I
53

At
85

Uus
117

Uhs
167

Bus
217

Bromine

Symbol

Atomic Number

Group

halogens

Relative Atomic Mass
¹²C = 12.0000

79.904 (±1) [Since 1965]

Atomic Radius pm

114

First Ionisation Energy
kJ mol ^-1

1139.9

Ionisation Energy (eV)

11.8138

Electronegativity

2.96

Density
kg m ^-3

4050 [123 K]
3122.6 [293 K]
7.59 (gas)

Molar Volume cm ³

19.73 [123 K]

Thermal Conductivity
W m ^-1 K ^-1

0.122 [300K]

Melting Point K

265.9

Boiling Point K

331.93

Number of Isotopes

Isotope Atomic mass/u Mole fraction

79Br 78.918 3379(20) 0.5069(7)
81Br 80.916 291(3) 0.4931(7)

Inner + outer Shells

Inner + outer Orbitals

Filling Orbital

4p ⁵

Ground State Electron
Configuration

[Ar]

3d ¹⁰

4s ²

4p ⁵

Ground State Electron
Configuration with
free Orbitals (n=1)

0, 0, 0, 1

Ground State Electron
Configuration with
compressed Orbitals (n=24)

0, 0, 0, 24

Singularity

	s	p		d	f	g	h	i	j
1	2
2	2	6
3	2	6		10
4	2	5	1	10	14
5
6
7

Singularity

Term Symbol

²P^º _3/2

Discovery

Carl Löwig (Heidelberg, Germany) in 1825, but it was first publicly announced in 1826 by the French chemist and pharmacist Antoine-Jérôme Balard (Montpellier, France), and so the discovery is, therefore, credited to him.

Name Derived From

The name derives from the Greek bromos for "bad stench or bad odor".

APSIDIUM ©	Created:		2002-06-01		035.pdf
	Page update:		2005-01-18		035.pdf